Articles | Volume 24, issue 12
https://doi.org/10.5194/nhess-24-4523-2024
https://doi.org/10.5194/nhess-24-4523-2024
Research article
 | 
11 Dec 2024
Research article |  | 11 Dec 2024

Sedimentary record of historical seismicity in a small, southern Oregon lake

Ann E. Morey, Mark D. Shapley, Daniel G. Gavin, Alan R. Nelson, and Chris Goldfinger

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A 2700-year record of Cascadia megathrust and crustal/slab earthquakes from Acorn Woman Lakes, Oregon
Ann E. Morey and Chris Goldfinger
Nat. Hazards Earth Syst. Sci., 24, 4563–4584, https://doi.org/10.5194/nhess-24-4563-2024,https://doi.org/10.5194/nhess-24-4563-2024, 2024
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Cited articles

Adams, J.: Paleoseismicity of the Cascadia subduction zone: Evidence from turbidites off the Oregon‐Washington margin, Tectonics, 9, 569–583, 1990. 
Alexander, J. and Mulder, T.: Experimental quasi-steady density currents, Mar. Geol, 186, 195–210, 2002. 
Bakun, W. H.: Seismicity of California's north coast, Bull. Seismol. Soc. Am., 90, 797–812, https://doi.org/10.1785/0119990138, 2000. 
Beck, C.: Late quaternary lacustrine paleo-seismic archives in north-western Alps: Examples of earthquake-origin assessment of sedimentary disturbances, Earth-Sci. Rev., 96, 327–344, https://doi.org/10.1016/j.earscirev.2009.07.005, 2009.  
Bennett, R. A., Wernicke, B. P., Niemi, N. A., Friedrich, A. M., and Davis, J. L.: Contemporary strain rates in the northern Basin and Range province from GPS data, Tectonics, 22, 1008, https://doi.org/10.1029/2001TC001355, 2003. 
Short summary
Disturbance events from historical sediments from a small lake in Oregon were evaluated to determine if Cascadia megathrust earthquakes are uniquely identifiable. Geochemical provenance data identify two likely Cascadia earthquakes, one from 1700 CE and the other from 1873 CE. A crustal earthquake deposit and flood deposits were also uniquely identified, suggesting that small Cascadia lakes are good recorders of megathrust earthquakes and other disturbances.
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